A room is 10.2 m long, 8.5 m wide and 4.6 m high .It has a door measuring 1.5×2.6 m and a window measuring 2m×1.7m . Find the cost of tiling the walls at Rs.13.50 per sq. m
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Answer:
Area of the 4 walls = 2(l+b)×h sq. units
= 2(10.2+8.5)×4.6 m sq.
= 2×18.7×4.6 m sq.
= 172.04 m sq.
Area of a door = l×b sq. units
= 1.5×2.6 m sq.
= 3.9 m sq.
Area of a window = 3.4 m sq. [ l×b ]
Total tilling area = Area of 4 walls- (area of a
door + area of a window)
= 172.04 - (3.9 + 3.4) m sq.
= 164.74 m sq.
Total cost = Rs. (13.50×164.74)
= Rs. 2223.99
= Rs. 2224
Step-by-step explanation:
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